Each cell contains only one nucleus, whereas other types of organelles are present in multiple copies in the cellular contents, or cytoplasm.
Nowadays, membrane processes play an important role, and are present in multiple everyday processes.
In 1996, Wang et al. demonstrated that SWI/SNF complexes are present in multiple forms made up by 9 12 proteins in mammals (Wang et al., 1996).
In archaea several exosome proteins are present in multiple copies, to form the full core of the exosome complex.
In any 2-DE dataset, many proteins are present in multiple isoforms.
Our next goal will be to determine by Southern-blot hybridization whether T3E genes are present in multiple copies in our strain collection.
They are composed of ∼30 different proteins, called nucleoporins (Nups), that are present in multiple copies in each pore [3], [4], [5].
β-1, 3 glucanases are present in multiple structural isoforms that differ in size, pI, primary structure, cellular localization and pattern of regulation [41], [42].
Similarly to seed plants, in Physcomitrella and all other algae species analyzed in this study, major LHCII components are present in multiple copies.
The number of resistance determinants varies with four on pYR1, ten on pIP1202 and 13 on pSN254, several of which are present in multiple copies (Table 1 and Fig. 1).
Several segmental homologues are present in multiple abdominal segments, including DIMM neurons expressing COR, allatostatin A (Ast-A), ion transport polypeptide (ITP), Diuretic Hormone 31 (DH 31), NPLP1, and leukokinin (LK) (Figure 6).
